I'm assuming you shoot from the hip, you speak first then you think (maybe)...
Do a little research and reading first and then please come back and bring constructive criticism and input to help Storj. Else, go troll elsewhere.
I have been also looking for answers for the same questions and didn't found any. IMHO the redundancy for the files to stay safe will have to be an order of magnitude greater than the traditional storage, making the storage in the Storj network too expensive. Considering that the "miners" will mine as far as it's profitable to do it, this could pose a BIG risk for the persistency of data stored in Storj.